October 29, one week from Monday, is shaping-up to be ground zero for smartphone news. Microsoft has its Windows Phone 8 event, Google is planning an announcement of its own, and now T-Mobile is looking to get in on the action as well, sending out invitations to its own October 29 event.

So, what might we hope to see from T-Moible? Well, there are a couple ways this could go? We’ve heard a lot about leaked T-Mobile roadmaps as of late, giving us a pretty good idea of upcoming handsets like the Note II, Windows Phone 8X, LG L9, and the Lumia 810. This event might be the carrier’s way to capitalize on all these models arriving within a short timeframe, showcasing them all in one go.

On the other hand, T-Mobile just might have something a little more unexpected to share. There’s certainly a lot of upcoming hardware where we’re still at a loss for US launch details, like something based on the HTC J Butterfly that’s not another Droid for Verizon, or maybe even one of the new Nexus models like the LG Nexus 4. We’re a little less likely to buy that explanation, as it would be weird for T-Mobile to feature the phone the same day as Google is at a separate event, but it’s not outside the realm of consideration.

One way or another, we’re going to have a lot of news to share with you come October 29.